How to build a $20 47A power supply

[kazuaki]

So, here's my "Charging Box" that I recently completed. I used the HP 47A server power supply and cranked it up to output 13.4V. While I was tweaking inside the power supply, I rewired the fan to run off the 5V output, so it's much quieter. So far, it still stays plenty cool. I put it into a modified Plano tackle box with a pair of iCharger 206B chargers (capable of charging at 20A each). I added a socket on the outside of the box for a detachable power cord. I had previously modified the power supply with a toggle switch, so that powers the whole thing up. There is a ton of space for all the miscellaneous charge leads and balance adapters. And finally I added an LED volt meter because I thought it looked cool So far, I'm really liking this setup.